IME in FL, SOP is you sign a contract with a HI contingency, initial deposit is due in escrow within 3 days of contract signing. If the buyer isn't satisfied with the state of the house, seller can make repairs or give a price reduction /credit, or the buyer has the right to cancel. I don't believe the seller even has to counter-sign a release in order for the escrow agent to release the funds during the inspection period, as long as notice is given before the inspection period expires. The only thing a buyer would be out is the HI fee.